| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 20.2° | 3.5° | — | — | 94 |
| February | 21.2° | 4.9° | — | — | 94 |
| March | 24.8° | 7.9° | — | — | 94 |
| April | 29.1° | 11° | — | — | 86 |
| May | 33.7° | 15.3° | — | — | 67 |
| June | 39.2° | 21.1° | — | — | 45 |
| July | 38.9° | 23.7° | — | — | 46 |
| August | 37.9° | 22.8° | — | — | 50 |
| September | 36.1° | 20.2° | — | — | 58 |
| October | 31.2° | 13.5° | — | — | 77 |
| November | 25.2° | 7.5° | — | — | 94 |
| December | 19.9° | 3.3° | — | — | 94 |
January in Catalina Foothills averages a daily high of 20.2°C with nights around 3.5°C. Comfortable conditions for being outdoors all day.
February in Catalina Foothills averages a daily high of 21.2°C with nights around 4.9°C. Comfortable conditions for being outdoors all day.
March in Catalina Foothills averages a daily high of 24.8°C with nights around 7.9°C. Comfortable conditions for being outdoors all day.
April in Catalina Foothills averages a daily high of 29.1°C with nights around 11°C. Comfortable conditions for being outdoors all day.
May in Catalina Foothills averages a daily high of 33.7°C with nights around 15.3°C. Generally workable, with some weather to plan around.
June in Catalina Foothills averages a daily high of 39.2°C with nights around 21.1°C. Demanding conditions — pack for it and plan indoor options.
July in Catalina Foothills averages a daily high of 38.9°C with nights around 23.7°C. Demanding conditions — pack for it and plan indoor options.
August in Catalina Foothills averages a daily high of 37.9°C with nights around 22.8°C. Demanding conditions — pack for it and plan indoor options.
September in Catalina Foothills averages a daily high of 36.1°C with nights around 20.2°C. Generally workable, with some weather to plan around.
October in Catalina Foothills averages a daily high of 31.2°C with nights around 13.5°C. Comfortable conditions for being outdoors all day.
November in Catalina Foothills averages a daily high of 25.2°C with nights around 7.5°C. Comfortable conditions for being outdoors all day.
December in Catalina Foothills averages a daily high of 19.9°C with nights around 3.3°C. Comfortable conditions for being outdoors all day.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Catalina Foothills peaks at 94.
Based on 30 years of records, November–April scores highest for comfort in Catalina Foothills, balancing daytime temperature against rainfall.
June is the warmest, averaging a daily high of 39.2°C.
January is the wettest, averaging —mm of rain across roughly — wet days.
December is the coolest month, with average daily highs around 19.9°C.